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Old 03-20-2010, 05:11 PM   #14
NJ346
11 Second Club / I <3 LT1s
 
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Join Date: May 2008
Location: Troy, Mi
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Quote:
Originally Posted by RamAir95TA View Post
There are four possible causes for the pressure to bleed down so fast:

-Leaking fuel pump check ball.
-Leaking fuel pump flex pipe.
-Leaking valve/seat within fuel pressure regulator.
-Leaking injectors.

So it's definitely one of those. Good luck!
I just looked up a few more ways to check the fpr again. I never did a running fuel pressure test while unplugging the vacumm line on the. I guess the only way to test the fuel pump flex pipe would be to take the pump out of the tank and turn the key to run and see if there are any leak downs. The original pump had a leak so maybe that is the problem, but the clamps I used were pretty tight so I doubt that that is the problem.
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